深空探测航天器距离远、环境复杂,测控站遥测和遥控操作不能满足控制的实时性和安全性要求,自主管理技术是提高航天器对未知环境的应对能力、提升飞控实效性的主要手段.回顾了深空探测航天器自主管理技术发展的现状,分析了实现自主管理的关键技术,并结合深空探测工程实施和技术发展需求,提出了未来航天器自主管理系统体系结构和软件架构,并进行了仿真实验.
The Chang’e-5 has carried out China’s first autonomous rendezvous and docking in lunar orbit. The guidance, navigation, and control system (GNC) plays an important role in this achievement. This paper introduces the composition of the GNC system and its working principles, in addition to rendezvous and docking (RVD) phase partition and the key technology involved. In addition, the first RVD flight result and its evaluation are presented.
Although space electronic units are fully tested and experimented on ground,unexpected fault still exists.Reliability,safety and flexibility of these products can be improved by repairing the FPGA-based hardware system on orbit.Based on the in system programming(ISP)technique,a scheme for repairing FPGA-based hardware system is proposed.An implementation for the scheme is introduced using an example and a proposal is also provided.